Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules

The presence of net circular dichroism in the photoionization of nonchiral homonuclear molecules has been put in evidence recently through the measurement of molecular-frame photoelectron angular distributions in dissociative photoionization of H2 [Dowek, Phys. Rev. Lett. 104, 233003 (2010)]. In thi...

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Autores: Pérez-Torres, Jhon Fredy, Sanz-Vicario, J. L., Veyrinas, K., Billaud, P., Picard, Y. J., Elkharrat, C., Poullain, S. Marggi, Saquet, N., Lebech, M., Houver, J. C., Martín García, Fernando, Dowek, D.
Tipo de recurso: artículo
Fecha de publicación:2014
País:España
Institución:Universidad Autónoma de Madrid
Repositorio:Biblos-e Archivo. Repositorio Institucional de la UAM
Idioma:inglés
OAI Identifier:oai:repositorio.uam.es:10486/679873
Acceso en línea:http://hdl.handle.net/10486/679873
https://dx.doi.org/10.1103/PhysRevA.90.043417
Access Level:acceso abierto
Palabra clave:Dissociative photoionization
Photoelectron angular distributions
Química
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spelling Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 moleculesPérez-Torres, Jhon FredySanz-Vicario, J. L.Veyrinas, K.Billaud, P.Picard, Y. J.Elkharrat, C.Poullain, S. MarggiSaquet, N.Lebech, M.Houver, J. C.Martín García, FernandoDowek, D.Dissociative photoionizationPhotoelectron angular distributionsQuímicaThe presence of net circular dichroism in the photoionization of nonchiral homonuclear molecules has been put in evidence recently through the measurement of molecular-frame photoelectron angular distributions in dissociative photoionization of H2 [Dowek, Phys. Rev. Lett. 104, 233003 (2010)]. In this work we present a detailed study of circular dichroism in the photoelectron angular distributions of H2 and D2 molecules, oriented perpendicularly to the propagation vector of the circularly polarized light, at different photon energies (20, 27, and 32.5 eV). Circular dichroism in the angular distributions at 20 and to a large extent 27 eV exhibits the usual pattern in which inversion symmetry is preserved. In contrast, at 32.5 eV, the inversion symmetry breaks down, which eventually leads to total circular dichroism after integration over the polar emission angle. Time-dependent ab initio calculations support and explain the observed results for H2 in terms of quantum interferences between direct photoionization and delayed autoionization from the Q1 and Q2 doubly excited states into ionic states (1sσg and 2pσu) of different inversion symmetry. Nevertheless, for D2 at 32.5 eV, there is a particular case where theory and experiment disagree in the magnitude of the symmetry breaking: when D+ ions are produced with an energy of around 5 eV. This reflects the subleties associated to such simple molecules when exposed to this fine scrutinyWe are very grateful to L. Nahon and G. Garcia for fruitful cooperation, J. F. Gil for technical support, and the SOLEIL general staff for smoothly operating the facility. We gratefully acknowledge the contribution of S. Lupone and S. Damoy (ISMO). N.S. and D.D. acknowledge the support of the Agence Nationale de la Recherche under ATTOWAVE Contract No. ANR-09-BLAN-0031-01. We also thank Mare Nostrum BSC and CCC-UAM for allocation of computer time. The work was supported by the Spanish Ministerio de Ciencia e Innovación (MICINN) Project No. FIS2010-151127 and ERA-Chemistry Project No. PIM2010EEC-00751, the Spanish Ministerio de Economía y Competitividad (MINECO) Project No. FIS2013-42002-R, the XCHEM Advanced Grant No. GA-290853 of the European Research Council, the European Cooperation in Science and Technology (COST) XLIC Action No. CM1204, and the Vicerrectoría de Investigacion at Universidad de Antioquia (CODI Project No. E01538 and Estrategia de Sostenibilidad 2013-2014)American Physical SocietyDepartamento de QuímicaFacultad de Ciencias20142014-10-28research articlehttp://purl.org/coar/resource_type/c_2df8fbb1VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10486/679873https://dx.doi.org/10.1103/PhysRevA.90.043417reponame:Biblos-e Archivo. Repositorio Institucional de la UAMinstname:Universidad Autónoma de MadridInglésengopen accesshttp://purl.org/coar/access_right/c_abf2info:eu-repo/semantics/openAccessoai:repositorio.uam.es:10486/6798732026-06-23T12:46:27Z
dc.title.none.fl_str_mv Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
title Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
spellingShingle Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
Pérez-Torres, Jhon Fredy
Dissociative photoionization
Photoelectron angular distributions
Química
title_short Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
title_full Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
title_fullStr Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
title_full_unstemmed Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
title_sort Circular dichroism in molecular-frame photoelectron angular distributions in the dissociative photoionization of H2 and D2 molecules
dc.creator.none.fl_str_mv Pérez-Torres, Jhon Fredy
Sanz-Vicario, J. L.
Veyrinas, K.
Billaud, P.
Picard, Y. J.
Elkharrat, C.
Poullain, S. Marggi
Saquet, N.
Lebech, M.
Houver, J. C.
Martín García, Fernando
Dowek, D.
author Pérez-Torres, Jhon Fredy
author_facet Pérez-Torres, Jhon Fredy
Sanz-Vicario, J. L.
Veyrinas, K.
Billaud, P.
Picard, Y. J.
Elkharrat, C.
Poullain, S. Marggi
Saquet, N.
Lebech, M.
Houver, J. C.
Martín García, Fernando
Dowek, D.
author_role author
author2 Sanz-Vicario, J. L.
Veyrinas, K.
Billaud, P.
Picard, Y. J.
Elkharrat, C.
Poullain, S. Marggi
Saquet, N.
Lebech, M.
Houver, J. C.
Martín García, Fernando
Dowek, D.
author2_role author
author
author
author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Departamento de Química
Facultad de Ciencias
dc.subject.none.fl_str_mv Dissociative photoionization
Photoelectron angular distributions
Química
topic Dissociative photoionization
Photoelectron angular distributions
Química
description The presence of net circular dichroism in the photoionization of nonchiral homonuclear molecules has been put in evidence recently through the measurement of molecular-frame photoelectron angular distributions in dissociative photoionization of H2 [Dowek, Phys. Rev. Lett. 104, 233003 (2010)]. In this work we present a detailed study of circular dichroism in the photoelectron angular distributions of H2 and D2 molecules, oriented perpendicularly to the propagation vector of the circularly polarized light, at different photon energies (20, 27, and 32.5 eV). Circular dichroism in the angular distributions at 20 and to a large extent 27 eV exhibits the usual pattern in which inversion symmetry is preserved. In contrast, at 32.5 eV, the inversion symmetry breaks down, which eventually leads to total circular dichroism after integration over the polar emission angle. Time-dependent ab initio calculations support and explain the observed results for H2 in terms of quantum interferences between direct photoionization and delayed autoionization from the Q1 and Q2 doubly excited states into ionic states (1sσg and 2pσu) of different inversion symmetry. Nevertheless, for D2 at 32.5 eV, there is a particular case where theory and experiment disagree in the magnitude of the symmetry breaking: when D+ ions are produced with an energy of around 5 eV. This reflects the subleties associated to such simple molecules when exposed to this fine scrutiny
publishDate 2014
dc.date.none.fl_str_mv 2014
2014-10-28
dc.type.none.fl_str_mv research article
http://purl.org/coar/resource_type/c_2df8fbb1
VoR
http://purl.org/coar/version/c_970fb48d4fbd8a85
dc.type.openaire.fl_str_mv info:eu-repo/semantics/article
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10486/679873
https://dx.doi.org/10.1103/PhysRevA.90.043417
url http://hdl.handle.net/10486/679873
https://dx.doi.org/10.1103/PhysRevA.90.043417
dc.language.none.fl_str_mv Inglés
eng
language_invalid_str_mv Inglés
language eng
dc.rights.none.fl_str_mv open access
http://purl.org/coar/access_right/c_abf2
dc.rights.openaire.fl_str_mv info:eu-repo/semantics/openAccess
rights_invalid_str_mv open access
http://purl.org/coar/access_right/c_abf2
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv American Physical Society
publisher.none.fl_str_mv American Physical Society
dc.source.none.fl_str_mv reponame:Biblos-e Archivo. Repositorio Institucional de la UAM
instname:Universidad Autónoma de Madrid
instname_str Universidad Autónoma de Madrid
reponame_str Biblos-e Archivo. Repositorio Institucional de la UAM
collection Biblos-e Archivo. Repositorio Institucional de la UAM
repository.name.fl_str_mv
repository.mail.fl_str_mv
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